Hello Maher alshaheri,
We’ve checked your site. You need to contact your hosting provider with your request you posted here, and ask for help from their side with this also – https://gyazo.com/06519c00697237171844a5b8adecaba7
Read these posts about DOM https://docs.wp-rocket.me/article/1412-avoid-an-excessive-dom-size https://isotropic.co/avoid-an-excessive-dom-size-on-your-wordpress-website/
Edit your page and Product elements and enable Lazy loading for the Product elements. It should reduce the DOM structure. Also, you may try to reduce the DOM results on the page by reducing the number of sections of the page/elements in the footer or header.
Regards